In this Aug. 19, 2019 photo, Greg Manteufel tries out a new prosthetic arm during occupational therapy at Froedtert & the Medical College of Wisconsin in Milwaukee, as he talks to Dr. David Del Toro, the medical director for inpatient rehab. Manteufel lost parts of his arms and legs, as well as the skin of his nose and part of his upper lip from capnocytophaga, a bacteria commonly found in the saliva or cats and dogs that almost never leads to people getting sick, unless the person has a compromised immune system. He was perfectly healthy when he got sick in June of 2018. Over the last seven years, a team of researchers at Brigham and Women's Hospital in Boston, connected to Harvard Medical School, have tested other healthy people who were affected and developed a theory on why they were affected- a gene change in all the victims. (AP Photo/Carrie Antlfinger)
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